TeXnical notes

2013-06-10T15:52:44Z

152.3.43.176: fixed link to aaron lauda

Sometimes I find a solution to a TeXnical problem, and I think everybody should know about it. Some of these things are totally obvious, but (as far as I know) non-standard.

You may also want to check out my [[advice on real-time TeXing]].

==BibTeX without a separate .bib file==

[http://stacky.net/files/selfcontainedBibTeX.dvi dvi] [http://stacky.net/files/selfcontainedBibTeX.tex tex]

$Bib\TeX$ has the nice feature that it makes your bibliography
nicely; the entries are all formatted the same way, and it is
easy to change that format. However, it is annoying that you
have to have a separate <code>.bib</code> file to contain all your
bibliography entries. Fortunately, it is not too hard to build
the <code>.bib</code> file into the <code>.tex</code> file. To illustrate,
the source of [Ant06] is (sorta) included below.
Note that you have to run $\LaTeX$, $Bib\TeX$, $\LaTeX$, $\LaTeX$, as
usual when you use $Bib\TeX$.

<pre>
\documentclass{article}
\usepackage{verbatim}
\begin{document}
Bib\TeX\ has the nice feature that it makes your bibliography
nicely; the entries are all formatted the same way, and it is
easy to change that format. However, it is annoying that you
have to have a separate \verb|.bib| file to contain all your
bibliography entries. Fortunately, it is not too hard to build
the \verb|.bib| file into the \verb|.tex| file. To illustrate,
the source of \cite{this_file} is (sorta) included below.
Note that you have to run \LaTeX, Bib\TeX, \LaTeX, \LaTeX, as
usual when you use Bib\TeX.

%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% main text goes here %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%

\bibliography{\jobname}
\bibliographystyle{alpha}

\openout0= \jobname.bib
\write0{
@book {this_file,
AUTHOR = {Anton},
TITLE = {This document},
YEAR = {2006},
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% more bib entries go here %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
}
\end{document}
</pre>

'''References'''<br>
[Ant06] Anton. [http://stacky.net/files/selfcontainedBibTeX.tex ''This document.''] 2006.

==How to draw the Fox-Artin wild arc with pstricks==

<code><pre>
\documentclass{article}
\usepackage{pstricks}
\usepackage{multido}
\begin{document}
\[\begin{pspicture}(-7.6,-.5)(7.32,2.5)
\newdimen\totaljump % This measures where the orgin is
\newdimen\jumpinterval % This measures how much the origin moves each time
%%%%% First we draw the left hand side. Because we are utilizing borders, we have %%%%%
%%%%% to draw from left to right, so compute by hand what the unit should be. %%%%%
\psset{unit=0.17293822569mm,border=.05,linewidth=.03}
\totaljump=-75mm
\jumpinterval=0.17293822569mm
\multido{}{20}{
% Move the origin to the appropriate place %%%%
\psset{origin={\totaljump,0}, unit= 1.25, border=.05, linewidth=.03}
% Draw a piece of the curve
\pscurve(-.1,.1)(-.2,.3)(0,1.5)(1,.7)(2.3,.3)(2,-.05)(1.1,-.2)(1,-.1)
% Scale the jumpinterval by .8 and increment totaljump
\multiply\jumpinterval by 5 \divide\jumpinterval by 4
\advance\totaljump by \jumpinterval
}
%%%% Now we draw one piece of the curve in the middle %%%%
%%%% to get the two ends to match up nicely. %%%%
\psset{unit=1.5cm,border=.05,linewidth=.03}
\pscurve(-.15,.12)(-.2,.3)(0,1.7)(1,.7)(1.8,.3)(1.6,-.05)(1.1,-.2)(.95,-.15)
%%%% Now draw the right hand side %%%%
\psset{origin={12mm,0}}
\totaljump=12mm
\jumpinterval=12mm
\multido{}{20}{
\advance\totaljump by \jumpinterval
\multiply\jumpinterval by 4 \divide\jumpinterval by 5
\pscurve(-.1,.1)(-.2,.3)(0,1.5)(1,.7)(1.6,.3)(1.4,-.05)(1.1,-.2)(.9,-.1)
\psset{origin={\totaljump,0}, unit= .8, border=.05, linewidth=.03}
}
\end{pspicture}\]
\end{document}
</pre></code>
[[File:Fox-artin.png]]

==Placing labels on arrows in XY-pic==
(I learned this trick from [http://www-bcf.usc.edu/~lauda/Aaron_Laudas_Page/Home.html Aaron Lauda]; I haven't seen it documented anywhere)
\xymatrix{asdfasdf \ar[r]^{f} & a }
produces the label "f" in a stupid place, half-way between the centers of the two entries, instead of where you'd like it to be, half-way along the arrow. One way to handle this is to do something like <code>\ar[r]^(.7){f}</code> but that is fairly unsatisfying because you have to calibrate the (.7) by eye. There is another way, which is to use
\ar[r]^-{f}
which will automatically place the label "f" half-way along the arrow. If you want the label .7 of the way ''along the arrow'', you can do <code>\ar[r]^-(.7){f}</code>.

== {{todo|should really add some stuff about \show here}} ==

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TeXnical notes